login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A031141 Position of rightmost digit 0 in 2^A031140(n). 5
2, 5, 8, 11, 12, 13, 14, 23, 36, 38, 54, 57, 59, 93, 115, 119, 120, 121, 136, 138, 164, 174, 176, 191, 196, 212, 217, 227, 233, 249 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

"Positions" are counted 0,1,2,3,... starting with the least significant digit.

LINKS

Table of n, a(n) for n=1..30.

Eric Weisstein's World of Mathematics, Zero.

PROG

(PARI) m=0; for(k=0, oo, d=digits(2^k); for(j=0, #d-1, d[#d-j]||(j>m&&print1(m=j, ", ")||break))) \\ M. F. Hasler, Jun 21 2018

CROSSREFS

Cf. A031140, A031142, A031143.

Sequence in context: A056734 A019995 A188802 * A143263 A102624 A070328

Adjacent sequences:  A031138 A031139 A031140 * A031142 A031143 A031144

KEYWORD

nonn,base,more

AUTHOR

Matthew Cook, Dan Hoey, Eric W. Weisstein, David W. Wilson

EXTENSIONS

More terms from Dan Hoey

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent | More pages
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 22 06:06 EST 2018. Contains 317453 sequences. (Running on oeis4.)